* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

header {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1rem 0;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    animation: slideDown 0.6s ease-out;
}

nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

nav a:hover {
    color: #667eea;
    background: rgba(255, 255, 255, 0.1);
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: fadeIn 0.8s ease-out;
}

main h2 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 2rem;
}

main p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

footer {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    nav {
        gap: 1rem;
    }

    main {
        margin: 1rem;
        padding: 1.5rem;
    }

    main h2 {
        font-size: 1.5rem;
    }
}